code: def _test_serialize_many_deserialize_combinations():
      cases = [
          ("TestCase_0", lambda: ()),
          (
              "TestCase_1",
              lambda: sparse_tensor.SparseTensor(
                  indices=[[0, 0]], values=[1], dense_shape=[1, 1]
              ),
          ),
          (
              "TestCase_2",
              lambda: sparse_tensor.SparseTensor(
                  indices=[[3, 4]], values=[-1], dense_shape=[4, 5]
              ),
          ),
          (
              "TestCase_3",
              lambda: sparse_tensor.SparseTensor(
                  indices=[[0, 0], [3, 4]],
                  values=[1, -1],
                  dense_shape=[4, 5],
              ),
          ),
          (
              "TestCase_4",
              lambda: (
                  sparse_tensor.SparseTensor(
                      indices=[[0, 0]], values=[1], dense_shape=[1, 1]
                  )
              ),
          ),
          (
              "TestCase_5",
              lambda: (
                  sparse_tensor.SparseTensor(
                      indices=[[0, 0]], values=[1], dense_shape=[1, 1]
                  ),
                  (),
              ),
          ),
          (
              "TestCase_6",
              lambda: (
                  (),
                  sparse_tensor.SparseTensor(
                      indices=[[0, 0]], values=[1], dense_shape=[1, 1]
                  ),
              ),
          ),
      ]
  
      def reduce_fn(x, y):
          name, input_fn = y
          return x + combinations.combine(
              input_fn=combinations.NamedObject(
                  "input_fn.{}".format(name), input_fn
              )
          )
  
      return functools.reduce(reduce_fn, cases, [])
  
imports: import functools
  from absl.testing import parameterized
  from tensorflow.python.data.kernel_tests import test_base
  from tensorflow.python.data.util import nest
  from tensorflow.python.data.util import sparse
  from tensorflow.python.framework import combinations
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import sparse_tensor
  from tensorflow.python.framework import tensor
  from tensorflow.python.framework import tensor_shape
  from tensorflow.python.platform import test
label_desc: Use image node_id 6 for calling a global function with example usage: _test_serialize_many_deserialize_combinations() and returns: functools, unknown